BLE CC2541低功耗測試實驗 晶元驗證篇

通過檢視晶元手冊cc2541的電氣特性表，cc2541低功耗(lowpower)有三種狀態:powermode1（簡稱：pm1）、powermode2（簡稱：pm2）、powermode3（簡稱：pm3）。

描述：

lowpowerstate

typical value

pm1270μa

pm21μa

pm30.5μa

本實驗是要驗證cc2541晶元在三種不同的狀態下負載電流值大小，所以說，我會在系統上電後直接配置完所有pin腳狀態以及相應的模式，然後，觀察電流錶電流值的變化。

偽**實現：

/*配置pin腳的狀態*/

/*配置lowpowermode狀態*/

/*直接進入while狀態*/

1. 因為配置完直接就進入了while(1)迴圈，除錯的時候一定要把看門狗去掉，剔除巨集wdt_used。

2. 燒錄完**後，切記一定要拔掉ccdebugger**器，**器本身也消耗電流。

p0sel=0x00;

p1sel=0x00;

p2sel=0x00;

p0dir=0x00;

p1dir=0x00;

p2dir=0x00;

p0inp=0x00;

p1inp=0x00;

p2inp=0x00;

sleepcmd &= ~ bv(0);

sleepcmd &= ~ bv(1);

sleepcmd |= bv(0);

pcon = 1;

while(1);

p0sel=0x00;

p1sel=0x00;

p2sel= 0x00;

p0dir=0x00;

p1dir=0x00;

p2dir=0x00;

p0inp=0x00;

p1inp=0x00;

p2inp=0x00;

sleepcmd &= ~ bv(0);

sleepcmd &= ~ bv(1);

sleepcmd |= bv(1);

pcon = 1;

p0sel = 0x00;

p1sel = 0x00;

p2sel = 0x00;

p0dir = 0x00;

p1dir = 0x00;

p2dir = 0x00;

p0inp = 0x00;

p1inp = 0x00;

p2inp = 0x00;

sleepcmd &= ~ bv(0);

sleepcmd &= ~ bv(1);

sleepcmd |= bv(1);

sleepcmd |= bv(0);

pcon = 1;

p0sel=0x00;

p1sel=0x00;

p2sel=0x00;

p0dir=0x00;

p1dir=0x00;

p2dir=0x00;

p0inp=0x00;

p1inp=0x00;

p2inp=0x00;

p2inp |=bv(5);

p2inp |=bv(6);

p2inp |=bv(7);

sleepcmd &= ~bv(0);

sleepcmd &= ~bv(1);

sleepcmd |= bv(0);

pcon = 1;

while(1)

p0sel = 0x00;

p1sel = 0x00;

p2sel = 0x00;

p0dir = 0x00;

p1dir = 0x00;

p2dir = 0x00;

p0inp = 0x00;

p1inp = 0x00;

p2inp = 0x00;

p2inp |= bv(5);

p2inp |= bv(6);

p2inp |= bv(7);

sleepcmd &= ~ bv(0);

sleepcmd &= ~ bv(1);

sleepcmd |= bv(1);

pcon = 1;

while(1);

p0sel = 0x00;

p1sel = 0x00;

p2sel = 0x00;

p0dir = 0x00;

p1dir = 0x00;

p2dir = 0x00;

p0inp = 0x00;

p1inp = 0x00;

p2inp = 0x00;

p2inp |= bv(5);

p2inp |= bv(6);

p2inp |= bv(7);

sleepcmd &= ~ bv(0);

sleepcmd &= ~ bv(1);

sleepcmd |= bv(1);

sleepcmd |= bv(0);

pcon = 1;

while(1);

p0sel = 0x00;

p1sel = 0x00;

p2sel = 0x00;

p0dir = 0x00;

p1dir = 0x00;

p2dir = 0x00;

p0inp = 0xff;

p1inp = 0xfc;

sleepcmd &= ~ bv(0);

sleepcmd &= ~ bv(1);

sleepcmd |= bv(0);

pcon = 1;

while(1);

p0sel = 0x00;

p1sel = 0x00;

p2sel = 0x00;

p0dir = 0x00;

p1dir = 0x00;

p2dir = 0x00;

p0inp = 0xff;

p1inp = 0xfc;

sleepcmd &= ~ bv(0);

sleepcmd &= ~ bv(1);

sleepcmd |= bv(1);

pcon = 1;

while(1);

p0sel = 0x00;

p1sel = 0x00;

p2sel = 0x00;

p0dir = 0x00;

p1dir = 0x00;

p2dir = 0x00;

p0inp = 0xff;

p1inp = 0xfc;

sleepcmd &= ~ bv(0);

sleepcmd &= ~ bv(1);

sleepcmd |= bv(0);

sleepcmd |= bv(1);

pcon = 1;

while(1);

powermode 1

powermode 2

powermode 3

上拉254.2μa

1.2μa

0.4μa

下拉254.4μa

1.2μa

0.37μa

高阻601.3μa

182.4μa

398.9μa

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